"As these viruses continue to evolve, public health officials watch carefully to see whether new strains will be more easily ...

COVID-19 variant XFG accounted for 0% of U.S. cases in May. By late-June, it became the third-most common strain.

A painful sore throat, often referred to as "razor blade throat", is just one of the symptoms of a new COVID-19 variant. This variant is currently being monitored by the World Health Organization.

In fall 2025, rumors spread that the strain of the virus in circulation that causes COVID-19 had "very different signs" compared to other strains of the virus. Referring to it as "COVID-25," people ...

A registry study across 14 Japanese clinics analyzed 179 cases of post-COVID-19 vaccination syndrome (PCVS) and identified ...

The Advisory Committee on Immunization Practices’ COVID-19 Immunization Workgroup has proposed three federal actions to ...

Per-protocol analyses, however, suggested a nonsignificant trend toward a lower prevalence of long COVID at two months (OR, 0 ...

Thanksgiving week is typically one of the biggest travel periods of the year, but winter holidays like Christmas, Hanukkah, Kwanzaa and New Year's Eve aren't that far behind—and all that traveling, ...

New research reveals that even mild respiratory infections can leave lasting biological changes. However, COVID-19 stands ...

The timing of symptom onset depends on lots of factors, including the amount of virus to which someone was exposed, Hotez ...

It's been almost a year since Michael Reagan, 50, came down with COVID-19. "I woke up first thing in the morning and I felt really hot and out of breath," he said, recalling the morning of March 22, ...